Magnetic Elapsed Time SetDemonstrate one of the toughest math concepts. Segmented timeline even helps students understand that elapsed time can begin in the PM and end in the AM. Removable guide numbers support differentiation. Includes 2 magnetic clocks with hands, 24-hour timeline (4 segments), start and end time arrows, and removable guide numbers. Clocks measure 10" . Grade 2+LER 2983